Abstract
An effect of milling ball size on mechanical alloying process of Ti-Cu was investigated during vibratory ball milling of a mixture of elemental Ti and Cu powders. It was found that fine amorphous powder was produced and that the change in morphology, X-ray diffraction pattern, hardness, crystallization temperature and enthalpy of the powder particles during milling depended on the milling ball size. The changes in the crystallization temperature and enthalpy seemed to be caused by the compositional change of amorphous alloy during milling.